41. What do Pablo Casals, John Rock, and Grandma Moses have in common?

41. What do Pablo Casals, John Rock, and Grandma Moses have in common?A) They are all individuals who contributed little until they were old.B) They are people who were intellectually productive well into old age.C) They are all scientists whose important discoveries occurred when they were very old.D) They are all examples of how old age gradually reduces mental abilities that flourished in earlier life.